|Publication number||US8141828 B2|
|Application number||US 12/106,867|
|Publication date||Mar 27, 2012|
|Filing date||Apr 21, 2008|
|Priority date||Apr 21, 2008|
|Also published as||US20090261217|
|Publication number||106867, 12106867, US 8141828 B2, US 8141828B2, US-B2-8141828, US8141828 B2, US8141828B2|
|Inventors||Scott L. Clark|
|Original Assignee||Allen Ip Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (64), Non-Patent Citations (15), Referenced by (6), Classifications (12), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The invention relates to insert plates for a workpiece support table, such as support table for a router.
Powered hand tools, such as, for example, routers, handsaws, drills, planers, and the like, are often mounted to a planar support structure, such as a support table, to allow simplified operation, for example, when operating on large workpieces. Precise operations, such as routing, cutting and/or sanding operations using a support table require that the powered hand tool is precisely positioned relative to the support table. Frequently, a powered hand tool is first fixed to an insert plate that is then mounted flush to the support table. To facilitate this mounting, a support table may include an approximately central through-hole to receive the powered hand tool mounted to the insert plate.
In general, the invention relates to leveling an insert plate for a support table. Leveling is accomplished using a set of mounting and leveling apparatuses to attach the insert plate to the support table. The mounting and leveling apparatuses include at least one leveling device, such as a screw or bolt, which may be adjusted to change the distance between the insert plate and mounting bracket in order to mount the insert plate flush with the top surface of the support table. As the distance between the insert plate and mounting bracket is changed, the relative position of a surface of the insert plate changes with respect to the top surface of the support table.
In an embodiment, an assembly comprises a support table including a support table orifice; a insert plate within the support table orifice; and at least one mounting and leveling apparatus. The mounting and leveling apparatus comprises a clamp screw; at least two leveling screws; at least one mounting screw; and a mounting bracket that defines a first threaded hole that threadably engages the clamp screw, a second hole that receives the at least one mounting screw and a third set of threaded holes that each threadably engages one of the at least two leveling screws. The clamp screw pulls the insert plate towards mounting bracket when tightened. The at least one mounting screw couples the mounting bracket to the support table. The at least two leveling screws are independently adjustable to allow a top surface of the insert plate to be precisely aligned with a top surface of the support table.
Another embodiment is directed to a mounting and leveling apparatus, for mounting an insert plate to a support table. The mounting and leveling apparatus comprises a clamp screw; at least two leveling screws; at least one mounting screw; and a mounting bracket that defines a first threaded hole that threadably engages the clamp screw, a second hole that receives the at least one mounting screw and a third set of threaded holes that each threadably engages one of the at least two leveling screws. The clamp screw pulls the insert plate towards mounting bracket when tightened. The at least one mounting screw couples the mounting bracket to the support table. The at least two leveling screws are independently adjustable to allow a top surface of the insert plate to be precisely aligned with a top surface of the support table.
In another embodiment, a kit for mounting an insert plate to a support table comprises at least two mounting and leveling apparatuses and instructions for mounting the insert plate to the support table using the at least two mounting and leveling apparatuses. Each of the mounting and leveling apparatuses comprise a clamp screw; at least two leveling screws; at least one mounting screw; and a mounting bracket that defines a first threaded hole that threadably engages the clamp screw, a second hole that receives the at least one mounting screw and a third set of threaded holes that each threadably engages one of the at least two leveling screws. The clamp screw pulls the insert plate towards mounting bracket when tightened. The at least one mounting screw couples the mounting bracket to the support table, and the at least two leveling screws are independently adjustable to allow a top surface of the insert plate to be precisely aligned with a top surface of the support table.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.
As best seen in
A hand tool (not shown) is generally fixed to insert plate 200 by screws or other suitable mechanism. Insert plate 200 further includes inner wall 208 that defines orifice 210. Orifice 210 is sized to allow the cutting mechanism of a powered hand tool, such as, a router, saw, sander or the like, to extend above top surface 202 when the powered hand tool is mounted to insert plate 200. Inner wall 208 forming orifice 210 includes ledge 212 extending radially inward from a lower section of inner wall 208. Ledge 212 may be used to support a plate (not shown) with an orifice that more closely matches the size of the cutting mechanism of the hand tool mounted to insert plate 200 than orifice 210. Such a plate may be fixed to insert plate 200 using screws or other suitable mechanism. Because different plates may be mounted within orifice 210 on ledge 212, insert plate 200 is suitable for a variety hand tools and multiple size cutting mechanisms. For example, different plates may be used for different hand tools. As anther example, different plates may be used for routing bits of different sizes without removing the router from insert plate 200.
Insert plate 200 supports a hand tool, and as well as work pieces that are worked on by the hand tool. Because of this, it is desirable for insert plate 200 to be formed from strong and durable materials. For example, insert plate 200 may be formed from suitable materials such as a metal, polymer, a filled resin, wood or the like.
Support table 300 may be of any suitable size and may be supported by a support frame or other support structure. For example, support table 300 may be designed to rest on a work bench, and may thus include a relatively short support frame to suspend the support table 300 off of the work bench enough to provide clearance for a hand tool mounted to insert plate 200. In other embodiments, support table 300 may include a frame which supports table 300 off of a floor at a desirable height. Support table 300 may include a durable and strong material, such as, for example, a metal such as aluminum or steel, wood, or the like.
It is generally desirable that top surface 302 of support table 300 and top surface 202 of insert plate 200 provide a substantially planar surface to support a work piece that is to be manipulated by the hand tool. Because insert plate 200 may experience wear during use of the hand tool, the thickness and/or thickness uniformity of insert plate 200 can change over the course of the lifetime of the insert plate. For example, insert plate 200 may wear substantially uniformly, and become thinner over substantially its entire area. As another example, a groove or depression corresponding to a common pattern of movement of a work piece across surface 202 of insert plate 200 may be formed over the course of time. Likewise, top surface 302 of support table 300 may also wear over time.
Regardless of the cause and/or evolution of any variation in the alignment of surface 202 of insert plate 200 with respect to surface 302 of support table 300, it is desirable that this variation can be mitigated or fully corrected. Mounting and leveling apparatus 100 allows for straightforward and flexible adjustment of the position of surface 202 of insert plate 200 with respect to surface 302 of support table 300.
For example, the combination of mounting bracket 102, clamp screw 104 and leveling screws 106 allows precise adjustment of the distance between leveling plate 102 and surface 202. Further, the use of at least two leveling screws 106 allows a user to adjust not only the distance between leveling plate 102 and surface 202, but also the relative pitch of surface 202 of insert plate 200 with respect to leveling plate 102 (e.g., top surface 126 of leveling plate 102). As will be described in greater detail below, the configuration of mounting and leveling apparatus 100 allows precise positioning of leveling plate 102 relative to support table 300. For example, mounting and leveling apparatus 100 may be used to align top surface 202 of insert plate 200 with surface 302 of support table 300 even if insert plate 200 becomes worn or warped over time.
As shown in
Mounting plate 102 couples to support table 300 via mounting screws 108 a, 108 b, 108 c (collectively “mounting screws 108”), which extend through-holes 114 a, 114 b, 114 c (collectively “holes 114”), respectively. Holes 114 may include substantially smooth sidewalls. Mounting screws 108 then threadably engage with mounting holes 312 of support table 300 to couple mounting bracket 102 with support table 300. In other embodiments, mounting screws 108 may be self tapping screws, such as wood screws, that do not require threaded holes or even holes in support table 300. While three mounting screws 108 are illustrated in the figures, in other embodiments, any useful number of mounting screws 108 may be utilized. For example, in some embodiments, the mounting bracket 102 may be coupled to the support table using at least one mounting screw 108.
Mounting plate 102 may be generally triangular in shape, as illustrated in the figures. However, it will be understood that the shape of the mounting bracket 102 is not thus limited, and may include other shapes, such as, for example, rectangular, circular, elliptical, or any other useful shape. Mounting plate may be formed of a wide range of materials, including, for example, metal, polymer, filled resin, or the like. In some embodiments, mounting bracket 102 includes a filled resin, such as, for example, a glass filled resin.
In the illustrated embodiment, mounting bracket 102 also includes a protrusion 116, best seen in
Rectangular orifice 310 is a straight-cut through-hole in support table 300. Rectangular orifice 310 may be created using a jigsaw or other suitable cutting instrument. The support table orifice 310 defines a first straight side 310 a and a second straight side 310 and an arched corner 310 c. The first straight side 310 a of the support table orifice 310 is continuous with the arched corner 310 c of the support table orifice 310 and the arched corner 310 c of the support table orifice 310 is continuous with the second straight side 310 b of the support table orifice 310. Thus, the first and second straight sides 116 b and 116 c of the protrusion 116 and the arched corner 116 d of the protrusion 116 extends into the support table orifice 310 and continuously engages the first and second straight sides 310 a and 310 b of the support table orifice 310 and arched corner 310 c of the support table orifice 310. In this manner, a kit including a set of mount and leveling apparatuses 100 and an insert plate 200 could be installed on any suitable table by cutting any suitable table to include orifice 310. For example, such a kit may include a template for orifice 310.
In other embodiments, mounting bracket 102 may not include a protrusion 116 to register the mounting bracket 102 to corner 314 of orifice 310. In yet other embodiments, mounting bracket 102 may include a plurality of features which register mounting bracket 102 to corner 314 of orifice 310. For example, mounting bracket 102 may include at least two smaller protrusions which together register mounting bracket 102 to corner 314 of orifice 310. Further, in other embodiments, mounting bracket 102 may include protrusions or other features which register mounting bracket 102 to another location of orifice 310, such as, for example, a location along an edge of orifice 310.
As is best seen in
Leveling screws 106 may be threaded through-holes 110 until each leveling screw 106 a and 106 b protrudes from top surface 126 of mounting bracket 102. In this manner, leveling screws 106 are threaded through-holes 110 in the opposite direction that clamp screw 104 is threaded through-hole 112. To accomplish the threading, leveling screws 106 may include suitable features to allow mating with a screw bit, such as a hex head bit, a Phillips bit, or the like.
Leveling screws 106 form contact sites on which insert plate 200 rests. Adjusting the length of each of leveling screws 106 that protrudes from surface 126 of mounting bracket 102, then, likewise adjusts the distance between major surface 126 of mounting bracket 102 and bottom surface 204 of insert plate 200 at each point of contact.
Additionally, providing at least two leveling screws 106 in each mounting and leveling apparatus 100 allows a user to finely position insert plate 200 with respect to support table 300. For example, utilizing two leveling screws 106 in each apparatus 100 may allow a user to correct the angle at which insert plate 200 is oriented at the location of each apparatus 100. In contrast, use of a single leveling screw 106 at each apparatus 100 would not allow this fine adjustment or twisting of insert plate 200 to restore its flatness in the event it became warped. While
As is best seen in
The support table 300 may further incorporate a fence system. One exemplary fence system includes a universal machinery fence system, as described in further detail in U.S. Patent Application Publication No. 2006/0248998, which is incorporated herein by reference in its entirety. Generally, the universal machinery fence system has a rail for attachment to a support table 300 of a workpiece manipulation machine and the rail defines a track. A clamp block is releasably assembled to the rail with surfaces that mate with the track of the rail to guide the clamp block linearly along the rail. The clamp block includes a fastener for securing the position of the clamp block along the rail. The system includes a fence for guiding a workpiece into a workpiece manipulation tool, the fence being fixed to the clamp block. The clamp block and fence can be used on, for example, a band saw, a router, a table saw, a drill press, or the like, by substituting the rail for a rail of a different cross-sectional shape.
A kit may be useful to allow a craftsman to mount an insert plate to a homemade support table. A kit for mounting an insert plate to a support table may include at least two mounting and leveling apparatuses, such as mounting and leveling apparatus 100 (
A kit may optionally include a screw driver for the screws in the mounting and leveling apparatuses. For example, the screw driver may be a Phillips screw driver, a flathead screw driver, an allen wrench, or a square drive. In embodiments having screws with different screw head configurations, a kit may include a screw driver for each screw head configuration. In one embodiment, a kit may include an alien wrench and a square drive.
Various embodiments of the invention have been described. These and other embodiments are within the scope of the following claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US821225 *||Aug 10, 1905||May 22, 1906||James C Dozier||Billiard-table leveling and holding device.|
|US1285628||Nov 17, 1917||Nov 26, 1918||Clarence C Craley||Metal-working machine.|
|US1994422||Jul 2, 1934||Mar 12, 1935||Starrett L S Co||V-block|
|US2020222 *||Apr 8, 1935||Nov 5, 1935||Delta Mfg Co||Machine table insert|
|US2260708||Jun 15, 1939||Oct 28, 1941||Rainsford French||Piston pin and king bolt vise|
|US2285897||Mar 31, 1938||Jun 9, 1942||Campbell Walter E||Acute angle gauge for saw tables|
|US2787301||Nov 4, 1954||Apr 2, 1957||Anderson Russell W||Table saw miter gauge|
|US2831746 *||Jul 15, 1955||Apr 22, 1958||Hammond Ind Inc||Typewriter platform|
|US3827686||Sep 26, 1972||Aug 6, 1974||Storkh B||Stop devices|
|US3994484||Dec 19, 1975||Nov 30, 1976||Yale Schorr||Work positioner for radial saws|
|US4062123||Sep 7, 1976||Dec 13, 1977||Ray Arnold Lundquist||Adjustable routing template|
|US4256000||Jun 4, 1979||Mar 17, 1981||Charles Seidel||Adjustable workstop|
|US4693158||Apr 24, 1986||Sep 15, 1987||Price T David||Fence system with a stop mechanism|
|US4747330||Dec 1, 1986||May 31, 1988||Carithers Jr Charles H||Mat cutting system|
|US4817693||Apr 27, 1988||Apr 4, 1989||Schuler Michael J||Machine tool extension table and method for installing same|
|US4871156||Nov 4, 1988||Oct 3, 1989||The Fletcher-Terry Company||Mat bevel cutting machine|
|US4887653||Nov 4, 1988||Dec 19, 1989||Thomas Alvin R||Power tool attachment for table saws|
|US5018562||Dec 21, 1989||May 28, 1991||Adams Phillip A||Power tool fence system|
|US5038486||Aug 4, 1989||Aug 13, 1991||The J.D.S. Company, Inc.||Miter gauge|
|US5063983||Jun 11, 1990||Nov 12, 1991||David Barry||Router table with swing arm measuring scale, block and method|
|US5139061||Oct 28, 1991||Aug 18, 1992||Neilson Patrick J||Router base table insert|
|US5155556||Jul 30, 1991||Oct 13, 1992||Foanio Anthony J||Hand-held drill bit tester|
|US5337641||Sep 14, 1992||Aug 16, 1994||Duginske Mark A||Woodworking machinery jig and fixture system|
|US5388337||Jun 7, 1993||Feb 14, 1995||Powers, Ii; William J.||Angle orienting level apparatus|
|US5398740 *||Nov 12, 1993||Mar 21, 1995||Miller; Manford B.||Power tool table with adjustable tool mounting plate insert and related method|
|US5443554||Nov 24, 1993||Aug 22, 1995||Robert; Denis||Positioning device for woodwork|
|US5490665||May 9, 1995||Feb 13, 1996||Wilhelm Altendorf Gmbh & Co. Kg||Pivotable stop for machine tools|
|US5553644||Jun 8, 1995||Sep 10, 1996||Adams; Phillip A.||Fence for woodworking machine|
|US5608970||Sep 19, 1995||Mar 11, 1997||Mount Shamrock Pty Ltd.||Quick release truss clamp and method|
|US5617909||Jul 21, 1994||Apr 8, 1997||Duginske; Mark A.||Woodworking machinery jig and fixture system|
|US5662019||May 3, 1995||Sep 2, 1997||Denman; Paul M.||Safety device for woodworking tools|
|US5695178||Nov 27, 1995||Dec 9, 1997||Shanview Patents Limited||Sliding block for clamping tools|
|US5716045||Jul 27, 1995||Feb 10, 1998||Taylor Design Group, Inc.||Universal precision positioning jig with micro positioning capability|
|US5725036 *||Feb 18, 1997||Mar 10, 1998||Walter; Daniel L.||Plunge router with precision adjustment mechanism and conversion kit|
|US5768966||Nov 21, 1996||Jun 23, 1998||Duginske; Mark A.||Woodworking machinery jig and fixture system|
|US5845555||Aug 23, 1996||Dec 8, 1998||Dawley; James Alonzo||Multi-position adjustable work stop assembly|
|US5890524||Aug 25, 1998||Apr 6, 1999||Lee Valley Tools Ltd.||Router table sled|
|US5918652||Aug 28, 1998||Jul 6, 1999||Lee Valley Tools Ltd.||Router bit positioning mechanism|
|US5970835 *||Sep 10, 1998||Oct 26, 1999||Black & Decker Inc.||Throat plate for a tool|
|US5979283||Sep 9, 1997||Nov 9, 1999||Osborne; David H.||Miter guide|
|US6076445 *||Jul 16, 1999||Jun 20, 2000||Black & Decker Inc.||Throat plate for a tool|
|US6189429||Sep 30, 1999||Feb 20, 2001||P&F Brother Industrial Corporation||Workpiece supporting assembly for a table saw|
|US6250190||Apr 9, 1998||Jun 26, 2001||Black & Decker Inc.||Movable fence for a machine tool|
|US6305447 *||Aug 28, 2000||Oct 23, 2001||Tony Rousseau||Base plate for mounting router in a support table|
|US6505659 *||Mar 20, 2002||Jan 14, 2003||Richard M. Hummel||Tool support|
|US6520224 *||Dec 21, 2001||Feb 18, 2003||Jessem Products Limited||Power tool mounting plate|
|US6520227 *||Aug 8, 2001||Feb 18, 2003||Robert E. Mc Farlin, Jr.||Apparatus and method for mounting routers in tables|
|US6557601||Aug 3, 2001||May 6, 2003||Taylor Design Group||Mechanical stop system|
|US6792984 *||Jun 19, 2002||Sep 21, 2004||Bench Dog, Inc.||Router lift|
|US6851243||Oct 20, 2000||Feb 8, 2005||Peter E. Sandford||Elements to erect female and male blanking dies for a die cutting and/or blanking machine|
|US6851345||Jul 2, 1998||Feb 8, 2005||John P. Kennelly||Cutting table fence|
|US6880442||Sep 6, 2002||Apr 19, 2005||Mark Duginske Llc||Woodworking machinery jig and fixture system|
|US6926479 *||Oct 25, 2004||Aug 9, 2005||Porter-Cable Corporation||Router plunge depth adjustment mechanism|
|US6948892 *||May 30, 2002||Sep 27, 2005||Hummel Richard M||Lift mechanism for plunge routers|
|US7089978 *||Feb 11, 2004||Aug 15, 2006||Nomis Llc||Tool attachment system and router attachment and method incorporating same|
|US7108463 *||Jun 12, 2003||Sep 19, 2006||Hummel Richard M||Lift mechanism for routers|
|US7249549 *||Feb 17, 2004||Jul 31, 2007||Thomas Stoffel||Zero-clearance table saw insert|
|US7409973 *||Aug 25, 2005||Aug 12, 2008||Lee Valley Tools Ltd.||Router table plate assembly|
|US7588400 *||Jul 24, 2007||Sep 15, 2009||Black & Decker Inc.||Router plunge depth adjustment mechanism|
|US20020194971||Jul 12, 2002||Dec 26, 2002||James Park||Table saw|
|US20050056345||Sep 17, 2004||Mar 17, 2005||Duginske Mark A.||Woodworking machinery stop and track system|
|US20050139056||Dec 31, 2004||Jun 30, 2005||Gass Stephen F.||Fences for table saws|
|US20060086425 *||Aug 25, 2005||Apr 27, 2006||Hyde Brent K||Router table plate assembly|
|US20060248998||May 5, 2006||Nov 9, 2006||Duginske Mark A||Improved Universal Machinery Fence System|
|1||"1992 GarrettWade Tool Catalog", front and back cover pages and pp. 72-85 and 166, Garrett Wade Company, Inc.|
|2||"Farris Right Angle Gauge Lets You Make Perfect Miters of Any Angle", 1 page, (admitted prior art).|
|3||"Fine Woodworking", Miter Gauges, Apr. 1992, (3 pages).|
|4||"Fine Woodworking", Remedy for a Worn Miter Gauge, Jul./Aug., No. 53, 1985, (3 pages).|
|5||"Joiner's Edge High Precision T-Slot Extrusion Modular 3-in 2 Woodworking System", Schuler Toolworks, Ltd., 1 page, 1991.|
|6||"Mechanical Engineers' Handbook", McGraw-Hill Book Company, Inc. 1958, Chapter 8, p. 134.|
|7||"Miter Gauge with Holddown (and Adjustable Strap)", 2 pages, (admitted prior art).|
|8||"Wood Werks Supply, Inc.", Vises, clamps saws, 3 pages, (admitted prior art).|
|9||Festool USA Tooltechnic Systems, LLC, MFT 800/MFT1080 Table, Master Festool USA Catalog 2005, (3 pages).|
|10||Final Office Action dated Jul. 20, 2009 for U.S. Appl. No. 11/381,805, (12 pages).|
|11||Laguna Tools, Webpage at www.lagunatools.com/LM410.htm, LM410 Combination Machine, Printed Jan. 6, 2003, 2 pages.|
|12||Martin Woodworking Machines Corp., Webpage www.martin-usa.com/t-slidingsaw.asp, Sliding Table Saw T 73, including T 73 Basic, T 73 Classic and T 73 CNC, Printed Jan. 8, 2003, (2 pages).|
|13||Martin Woodworking Machines Corp., Webpage www.martin-usa.com/t—slidingsaw.asp, Sliding Table Saw T 73, including T 73 Basic, T 73 Classic and T 73 CNC, Printed Jan. 8, 2003, (2 pages).|
|14||Vega Enterprises, Inc., "Vega Performance Miter Gage", (2 pages), Aug. 1994.|
|15||WoodsmithShop Catalog, "Adjustable Miter Fence", (2 pages, )1994.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8469345 *||Jul 19, 2010||Jun 25, 2013||C D P Holdings, LLC||Automated, adjustable, machine-tool work-piece-mounting apparatus|
|US20110018185 *||Jul 19, 2010||Jan 27, 2011||Samac Robert A||Automated, adjustable, machine-tool work-piece-mounting apparatus|
|US20120090512 *||Oct 4, 2011||Apr 19, 2012||Dettling Michael Louis||Drill Press Table|
|US20140145046 *||Sep 20, 2011||May 29, 2014||Richard Layne||Support|
|USD750143||Sep 5, 2014||Feb 23, 2016||Blanking Systems, Inc.||Corner piece|
|USD773553 *||Feb 18, 2015||Dec 6, 2016||Stewart-Macdonald Manufacturing Company||Stringed instrument work station|
|U.S. Classification||248/188.4, 108/159.11, 248/188.1, 248/188.2, 108/157.1|
|International Classification||F16M11/04, A47B13/00, F16M11/18|
|Cooperative Classification||B23Q3/186, B23Q1/25|
|European Classification||B23Q3/18C, B23Q1/25|
|Jul 15, 2008||AS||Assignment|
Owner name: ALLEN IP INC., IOWA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CLARK, SCOTT L.;REEL/FRAME:021240/0617
Effective date: 20080708
|Jun 27, 2013||AS||Assignment|
Owner name: KREG ENTERPRISES, INC., IOWA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLEN IP, INCORPORATED;REEL/FRAME:030698/0519
Effective date: 20130627
|May 11, 2015||FPAY||Fee payment|
Year of fee payment: 4